REPL Error, during Socket creation

(ns myns
  [:use clojure.contrib.server-socket])
(defn handler [in out] (print "invoked"))
(create-server 8080 handler)

java.net.SocketException: Unrecognized Windows Sockets error: 10106: create (NO_SOURCE_FILE:0)

* the same code runs without any error when the entire file is run directly outside repl.

* Am I doing something wrong?